Custom payment methods

I've just about finished setting up our test system but we have three additional payment methods on our current system that don't match any of the default plugins:Quote, Phone, Purchase Order. No information has to be collected for these methods so I I can modify some of the methods I'm not using such as Western Union to serve this purpose, but can I copy or rename one of the other plugins and give it a different ID so I have an actual "Phone" payment method?

Thanks
Tim

Ok thanks for the info.

Tim

I wanted to change the "Western Union" plugin into "Payment in Advance". I changed the name in the .xml file but the variable in my admin confirmation email "($data->order_payment_method)" still draws the name "westernunion".
Can I just change the line
if($method->payment_type!='westernunion' || !$method->enabled){

in the "westernunion.php" file?

It's the only place where I can find this exact naming..

Hi,
I have made a custom payment plugin based on the check payment. I also added a myplugin_configuration.php file in the zip.
After installation everything worked fine. Only this configuration file is missing. But everything works without it. What is if for? All other payment plugins do have this file. Which role does if play?

Many thanks in advance
Aleks